2 * sata_mv.c - Marvell SATA support
4 * Copyright 2005: EMC Corporation, all rights reserved.
6 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/pci.h>
26 #include <linux/init.h>
27 #include <linux/blkdev.h>
28 #include <linux/delay.h>
29 #include <linux/interrupt.h>
30 #include <linux/sched.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/device.h>
34 #include <scsi/scsi_host.h>
35 #include <linux/libata.h>
38 #define DRV_NAME "sata_mv"
39 #define DRV_VERSION "0.25"
42 /* BAR's are enumerated in terms of pci_resource_start() terms */
43 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
44 MV_IO_BAR = 2, /* offset 0x18: IO space */
45 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
47 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
48 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
51 MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
52 MV_SATAHC0_REG_BASE = 0x20000,
54 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
55 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
56 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
57 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
59 MV_USE_Q_DEPTH = ATA_DEF_QUEUE,
62 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
64 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
65 * CRPB needs alignment on a 256B boundary. Size == 256B
66 * SG count of 176 leads to MV_PORT_PRIV_DMA_SZ == 4KB
67 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
69 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
70 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
72 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
73 MV_PORT_PRIV_DMA_SZ = (MV_CRQB_Q_SZ + MV_CRPB_Q_SZ + MV_SG_TBL_SZ),
75 /* Our DMA boundary is determined by an ePRD being unable to handle
76 * anything larger than 64KB
78 MV_DMA_BOUNDARY = 0xffffU,
81 /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
83 /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
87 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
88 MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
89 MV_FLAG_GLBL_SFT_RST = (1 << 28), /* Global Soft Reset support */
90 MV_COMMON_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
91 ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
92 ATA_FLAG_PIO_POLLING),
93 MV_6XXX_FLAGS = (MV_FLAG_IRQ_COALESCE |
94 MV_FLAG_GLBL_SFT_RST),
101 CRQB_FLAG_READ = (1 << 0),
103 CRQB_CMD_ADDR_SHIFT = 8,
104 CRQB_CMD_CS = (0x2 << 11),
105 CRQB_CMD_LAST = (1 << 15),
107 CRPB_FLAG_STATUS_SHIFT = 8,
109 EPRD_FLAG_END_OF_TBL = (1 << 31),
111 /* PCI interface registers */
113 PCI_COMMAND_OFS = 0xc00,
115 PCI_MAIN_CMD_STS_OFS = 0xd30,
116 STOP_PCI_MASTER = (1 << 2),
117 PCI_MASTER_EMPTY = (1 << 3),
118 GLOB_SFT_RST = (1 << 4),
120 PCI_IRQ_CAUSE_OFS = 0x1d58,
121 PCI_IRQ_MASK_OFS = 0x1d5c,
122 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
124 HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
125 HC_MAIN_IRQ_MASK_OFS = 0x1d64,
126 PORT0_ERR = (1 << 0), /* shift by port # */
127 PORT0_DONE = (1 << 1), /* shift by port # */
128 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
129 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
131 TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
132 TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
133 PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
134 GPIO_INT = (1 << 22),
135 SELF_INT = (1 << 23),
136 TWSI_INT = (1 << 24),
137 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
138 HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
139 PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
142 /* SATAHC registers */
145 HC_IRQ_CAUSE_OFS = 0x14,
146 CRPB_DMA_DONE = (1 << 0), /* shift by port # */
147 HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */
148 DEV_IRQ = (1 << 8), /* shift by port # */
150 /* Shadow block registers */
152 SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
155 SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
156 SATA_ACTIVE_OFS = 0x350,
160 EDMA_CFG_Q_DEPTH = 0, /* queueing disabled */
161 EDMA_CFG_NCQ = (1 << 5),
162 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
163 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
164 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
166 EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
167 EDMA_ERR_IRQ_MASK_OFS = 0xc,
168 EDMA_ERR_D_PAR = (1 << 0),
169 EDMA_ERR_PRD_PAR = (1 << 1),
170 EDMA_ERR_DEV = (1 << 2),
171 EDMA_ERR_DEV_DCON = (1 << 3),
172 EDMA_ERR_DEV_CON = (1 << 4),
173 EDMA_ERR_SERR = (1 << 5),
174 EDMA_ERR_SELF_DIS = (1 << 7),
175 EDMA_ERR_BIST_ASYNC = (1 << 8),
176 EDMA_ERR_CRBQ_PAR = (1 << 9),
177 EDMA_ERR_CRPB_PAR = (1 << 10),
178 EDMA_ERR_INTRL_PAR = (1 << 11),
179 EDMA_ERR_IORDY = (1 << 12),
180 EDMA_ERR_LNK_CTRL_RX = (0xf << 13),
181 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15),
182 EDMA_ERR_LNK_DATA_RX = (0xf << 17),
183 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21),
184 EDMA_ERR_LNK_DATA_TX = (0x1f << 26),
185 EDMA_ERR_TRANS_PROTO = (1 << 31),
186 EDMA_ERR_FATAL = (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
187 EDMA_ERR_DEV_DCON | EDMA_ERR_CRBQ_PAR |
188 EDMA_ERR_CRPB_PAR | EDMA_ERR_INTRL_PAR |
189 EDMA_ERR_IORDY | EDMA_ERR_LNK_CTRL_RX_2 |
190 EDMA_ERR_LNK_DATA_RX |
191 EDMA_ERR_LNK_DATA_TX |
192 EDMA_ERR_TRANS_PROTO),
194 EDMA_REQ_Q_BASE_HI_OFS = 0x10,
195 EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
196 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
198 EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
199 EDMA_REQ_Q_PTR_SHIFT = 5,
201 EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
202 EDMA_RSP_Q_IN_PTR_OFS = 0x20,
203 EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
204 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
205 EDMA_RSP_Q_PTR_SHIFT = 3,
212 /* Host private flags (hp_flags) */
213 MV_HP_FLAG_MSI = (1 << 0),
215 /* Port private flags (pp_flags) */
216 MV_PP_FLAG_EDMA_EN = (1 << 0),
217 MV_PP_FLAG_EDMA_DS_ACT = (1 << 1),
220 /* Command ReQuest Block: 32B */
228 /* Command ResPonse Block: 8B */
235 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
243 struct mv_port_priv {
244 struct mv_crqb *crqb;
246 struct mv_crpb *crpb;
248 struct mv_sg *sg_tbl;
249 dma_addr_t sg_tbl_dma;
251 unsigned req_producer; /* cp of req_in_ptr */
252 unsigned rsp_consumer; /* cp of rsp_out_ptr */
256 struct mv_host_priv {
260 static void mv_irq_clear(struct ata_port *ap);
261 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
262 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
263 static void mv_phy_reset(struct ata_port *ap);
264 static void mv_host_stop(struct ata_host_set *host_set);
265 static int mv_port_start(struct ata_port *ap);
266 static void mv_port_stop(struct ata_port *ap);
267 static void mv_qc_prep(struct ata_queued_cmd *qc);
268 static int mv_qc_issue(struct ata_queued_cmd *qc);
269 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
270 struct pt_regs *regs);
271 static void mv_eng_timeout(struct ata_port *ap);
272 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
274 static Scsi_Host_Template mv_sht = {
275 .module = THIS_MODULE,
277 .ioctl = ata_scsi_ioctl,
278 .queuecommand = ata_scsi_queuecmd,
279 .eh_strategy_handler = ata_scsi_error,
280 .can_queue = MV_USE_Q_DEPTH,
281 .this_id = ATA_SHT_THIS_ID,
282 .sg_tablesize = MV_MAX_SG_CT,
283 .max_sectors = ATA_MAX_SECTORS,
284 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
285 .emulated = ATA_SHT_EMULATED,
286 .use_clustering = ATA_SHT_USE_CLUSTERING,
287 .proc_name = DRV_NAME,
288 .dma_boundary = MV_DMA_BOUNDARY,
289 .slave_configure = ata_scsi_slave_config,
290 .bios_param = ata_std_bios_param,
294 static const struct ata_port_operations mv_ops = {
295 .port_disable = ata_port_disable,
297 .tf_load = ata_tf_load,
298 .tf_read = ata_tf_read,
299 .check_status = ata_check_status,
300 .exec_command = ata_exec_command,
301 .dev_select = ata_std_dev_select,
303 .phy_reset = mv_phy_reset,
305 .qc_prep = mv_qc_prep,
306 .qc_issue = mv_qc_issue,
308 .eng_timeout = mv_eng_timeout,
310 .irq_handler = mv_interrupt,
311 .irq_clear = mv_irq_clear,
313 .scr_read = mv_scr_read,
314 .scr_write = mv_scr_write,
316 .port_start = mv_port_start,
317 .port_stop = mv_port_stop,
318 .host_stop = mv_host_stop,
321 static struct ata_port_info mv_port_info[] = {
324 .host_flags = MV_COMMON_FLAGS,
325 .pio_mask = 0x1f, /* pio0-4 */
326 .udma_mask = 0, /* 0x7f (udma0-6 disabled for now) */
331 .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
332 .pio_mask = 0x1f, /* pio0-4 */
333 .udma_mask = 0, /* 0x7f (udma0-6 disabled for now) */
338 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
339 .pio_mask = 0x1f, /* pio0-4 */
340 .udma_mask = 0x7f, /* udma0-6 */
345 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
347 .pio_mask = 0x1f, /* pio0-4 */
348 .udma_mask = 0x7f, /* udma0-6 */
353 static struct pci_device_id mv_pci_tbl[] = {
354 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5040), 0, 0, chip_504x},
355 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5041), 0, 0, chip_504x},
356 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5080), 0, 0, chip_508x},
357 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5081), 0, 0, chip_508x},
359 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6040), 0, 0, chip_604x},
360 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6041), 0, 0, chip_604x},
361 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6080), 0, 0, chip_608x},
362 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6081), 0, 0, chip_608x},
363 {} /* terminate list */
366 static struct pci_driver mv_pci_driver = {
368 .id_table = mv_pci_tbl,
369 .probe = mv_init_one,
370 .remove = ata_pci_remove_one,
377 static inline void writelfl(unsigned long data, void __iomem *addr)
380 (void) readl(addr); /* flush to avoid PCI posted write */
383 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
385 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
388 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
390 return (mv_hc_base(base, port >> MV_PORT_HC_SHIFT) +
391 MV_SATAHC_ARBTR_REG_SZ +
392 ((port & MV_PORT_MASK) * MV_PORT_REG_SZ));
395 static inline void __iomem *mv_ap_base(struct ata_port *ap)
397 return mv_port_base(ap->host_set->mmio_base, ap->port_no);
400 static inline int mv_get_hc_count(unsigned long hp_flags)
402 return ((hp_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
405 static void mv_irq_clear(struct ata_port *ap)
410 * mv_start_dma - Enable eDMA engine
411 * @base: port base address
412 * @pp: port private data
414 * Verify the local cache of the eDMA state is accurate with an
418 * Inherited from caller.
420 static void mv_start_dma(void __iomem *base, struct mv_port_priv *pp)
422 if (!(MV_PP_FLAG_EDMA_EN & pp->pp_flags)) {
423 writelfl(EDMA_EN, base + EDMA_CMD_OFS);
424 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
426 assert(EDMA_EN & readl(base + EDMA_CMD_OFS));
430 * mv_stop_dma - Disable eDMA engine
431 * @ap: ATA channel to manipulate
433 * Verify the local cache of the eDMA state is accurate with an
437 * Inherited from caller.
439 static void mv_stop_dma(struct ata_port *ap)
441 void __iomem *port_mmio = mv_ap_base(ap);
442 struct mv_port_priv *pp = ap->private_data;
446 if (MV_PP_FLAG_EDMA_EN & pp->pp_flags) {
447 /* Disable EDMA if active. The disable bit auto clears.
449 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
450 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
452 assert(!(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS)));
455 /* now properly wait for the eDMA to stop */
456 for (i = 1000; i > 0; i--) {
457 reg = readl(port_mmio + EDMA_CMD_OFS);
458 if (!(EDMA_EN & reg)) {
465 printk(KERN_ERR "ata%u: Unable to stop eDMA\n", ap->id);
466 /* FIXME: Consider doing a reset here to recover */
471 static void mv_dump_mem(void __iomem *start, unsigned bytes)
474 for (b = 0; b < bytes; ) {
475 DPRINTK("%p: ", start + b);
476 for (w = 0; b < bytes && w < 4; w++) {
477 printk("%08x ",readl(start + b));
485 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
490 for (b = 0; b < bytes; ) {
491 DPRINTK("%02x: ", b);
492 for (w = 0; b < bytes && w < 4; w++) {
493 (void) pci_read_config_dword(pdev,b,&dw);
501 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
502 struct pci_dev *pdev)
505 void __iomem *hc_base = mv_hc_base(mmio_base,
506 port >> MV_PORT_HC_SHIFT);
507 void __iomem *port_base;
508 int start_port, num_ports, p, start_hc, num_hcs, hc;
511 start_hc = start_port = 0;
512 num_ports = 8; /* shld be benign for 4 port devs */
515 start_hc = port >> MV_PORT_HC_SHIFT;
517 num_ports = num_hcs = 1;
519 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
520 num_ports > 1 ? num_ports - 1 : start_port);
523 DPRINTK("PCI config space regs:\n");
524 mv_dump_pci_cfg(pdev, 0x68);
526 DPRINTK("PCI regs:\n");
527 mv_dump_mem(mmio_base+0xc00, 0x3c);
528 mv_dump_mem(mmio_base+0xd00, 0x34);
529 mv_dump_mem(mmio_base+0xf00, 0x4);
530 mv_dump_mem(mmio_base+0x1d00, 0x6c);
531 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
532 hc_base = mv_hc_base(mmio_base, port >> MV_PORT_HC_SHIFT);
533 DPRINTK("HC regs (HC %i):\n", hc);
534 mv_dump_mem(hc_base, 0x1c);
536 for (p = start_port; p < start_port + num_ports; p++) {
537 port_base = mv_port_base(mmio_base, p);
538 DPRINTK("EDMA regs (port %i):\n",p);
539 mv_dump_mem(port_base, 0x54);
540 DPRINTK("SATA regs (port %i):\n",p);
541 mv_dump_mem(port_base+0x300, 0x60);
546 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
554 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
557 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
566 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
568 unsigned int ofs = mv_scr_offset(sc_reg_in);
570 if (0xffffffffU != ofs) {
571 return readl(mv_ap_base(ap) + ofs);
577 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
579 unsigned int ofs = mv_scr_offset(sc_reg_in);
581 if (0xffffffffU != ofs) {
582 writelfl(val, mv_ap_base(ap) + ofs);
587 * mv_global_soft_reset - Perform the 6xxx global soft reset
588 * @mmio_base: base address of the HBA
590 * This routine only applies to 6xxx parts.
593 * Inherited from caller.
595 static int mv_global_soft_reset(void __iomem *mmio_base)
597 void __iomem *reg = mmio_base + PCI_MAIN_CMD_STS_OFS;
601 /* Following procedure defined in PCI "main command and status
605 writel(t | STOP_PCI_MASTER, reg);
607 for (i = 0; i < 1000; i++) {
610 if (PCI_MASTER_EMPTY & t) {
614 if (!(PCI_MASTER_EMPTY & t)) {
615 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
623 writel(t | GLOB_SFT_RST, reg);
626 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
628 if (!(GLOB_SFT_RST & t)) {
629 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
634 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
637 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
640 } while ((GLOB_SFT_RST & t) && (i-- > 0));
642 if (GLOB_SFT_RST & t) {
643 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
651 * mv_host_stop - Host specific cleanup/stop routine.
652 * @host_set: host data structure
654 * Disable ints, cleanup host memory, call general purpose
658 * Inherited from caller.
660 static void mv_host_stop(struct ata_host_set *host_set)
662 struct mv_host_priv *hpriv = host_set->private_data;
663 struct pci_dev *pdev = to_pci_dev(host_set->dev);
665 if (hpriv->hp_flags & MV_HP_FLAG_MSI) {
666 pci_disable_msi(pdev);
671 ata_host_stop(host_set);
675 * mv_port_start - Port specific init/start routine.
676 * @ap: ATA channel to manipulate
678 * Allocate and point to DMA memory, init port private memory,
682 * Inherited from caller.
684 static int mv_port_start(struct ata_port *ap)
686 struct device *dev = ap->host_set->dev;
687 struct mv_port_priv *pp;
688 void __iomem *port_mmio = mv_ap_base(ap);
692 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
696 memset(pp, 0, sizeof(*pp));
698 mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
704 memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
706 /* First item in chunk of DMA memory:
707 * 32-slot command request table (CRQB), 32 bytes each in size
710 pp->crqb_dma = mem_dma;
712 mem_dma += MV_CRQB_Q_SZ;
715 * 32-slot command response table (CRPB), 8 bytes each in size
718 pp->crpb_dma = mem_dma;
720 mem_dma += MV_CRPB_Q_SZ;
723 * Table of scatter-gather descriptors (ePRD), 16 bytes each
726 pp->sg_tbl_dma = mem_dma;
728 writelfl(EDMA_CFG_Q_DEPTH | EDMA_CFG_RD_BRST_EXT |
729 EDMA_CFG_WR_BUFF_LEN, port_mmio + EDMA_CFG_OFS);
731 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
732 writelfl(pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK,
733 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
735 writelfl(0, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
736 writelfl(0, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
738 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
739 writelfl(pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK,
740 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
742 pp->req_producer = pp->rsp_consumer = 0;
744 /* Don't turn on EDMA here...do it before DMA commands only. Else
745 * we'll be unable to send non-data, PIO, etc due to restricted access
748 ap->private_data = pp;
753 * mv_port_stop - Port specific cleanup/stop routine.
754 * @ap: ATA channel to manipulate
756 * Stop DMA, cleanup port memory.
759 * This routine uses the host_set lock to protect the DMA stop.
761 static void mv_port_stop(struct ata_port *ap)
763 struct device *dev = ap->host_set->dev;
764 struct mv_port_priv *pp = ap->private_data;
767 spin_lock_irqsave(&ap->host_set->lock, flags);
769 spin_unlock_irqrestore(&ap->host_set->lock, flags);
771 ap->private_data = NULL;
772 dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
777 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
778 * @qc: queued command whose SG list to source from
780 * Populate the SG list and mark the last entry.
783 * Inherited from caller.
785 static void mv_fill_sg(struct ata_queued_cmd *qc)
787 struct mv_port_priv *pp = qc->ap->private_data;
790 for (i = 0; i < qc->n_elem; i++) {
794 addr = sg_dma_address(&qc->sg[i]);
795 sg_len = sg_dma_len(&qc->sg[i]);
797 pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
798 pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
799 assert(0 == (sg_len & ~MV_DMA_BOUNDARY));
800 pp->sg_tbl[i].flags_size = cpu_to_le32(sg_len);
802 if (0 < qc->n_elem) {
803 pp->sg_tbl[qc->n_elem - 1].flags_size |=
804 cpu_to_le32(EPRD_FLAG_END_OF_TBL);
808 static inline unsigned mv_inc_q_index(unsigned *index)
810 *index = (*index + 1) & MV_MAX_Q_DEPTH_MASK;
814 static inline void mv_crqb_pack_cmd(u16 *cmdw, u8 data, u8 addr, unsigned last)
816 *cmdw = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
817 (last ? CRQB_CMD_LAST : 0);
821 * mv_qc_prep - Host specific command preparation.
822 * @qc: queued command to prepare
824 * This routine simply redirects to the general purpose routine
825 * if command is not DMA. Else, it handles prep of the CRQB
826 * (command request block), does some sanity checking, and calls
827 * the SG load routine.
830 * Inherited from caller.
832 static void mv_qc_prep(struct ata_queued_cmd *qc)
834 struct ata_port *ap = qc->ap;
835 struct mv_port_priv *pp = ap->private_data;
837 struct ata_taskfile *tf;
840 if (ATA_PROT_DMA != qc->tf.protocol) {
844 /* the req producer index should be the same as we remember it */
845 assert(((readl(mv_ap_base(qc->ap) + EDMA_REQ_Q_IN_PTR_OFS) >>
846 EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
849 /* Fill in command request block
851 if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
852 flags |= CRQB_FLAG_READ;
854 assert(MV_MAX_Q_DEPTH > qc->tag);
855 flags |= qc->tag << CRQB_TAG_SHIFT;
857 pp->crqb[pp->req_producer].sg_addr =
858 cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
859 pp->crqb[pp->req_producer].sg_addr_hi =
860 cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
861 pp->crqb[pp->req_producer].ctrl_flags = cpu_to_le16(flags);
863 cw = &pp->crqb[pp->req_producer].ata_cmd[0];
866 /* Sadly, the CRQB cannot accomodate all registers--there are
867 * only 11 bytes...so we must pick and choose required
868 * registers based on the command. So, we drop feature and
869 * hob_feature for [RW] DMA commands, but they are needed for
870 * NCQ. NCQ will drop hob_nsect.
872 switch (tf->command) {
874 case ATA_CMD_READ_EXT:
876 case ATA_CMD_WRITE_EXT:
877 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
879 #ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
880 case ATA_CMD_FPDMA_READ:
881 case ATA_CMD_FPDMA_WRITE:
882 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
883 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
885 #endif /* FIXME: remove this line when NCQ added */
887 /* The only other commands EDMA supports in non-queued and
888 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
889 * of which are defined/used by Linux. If we get here, this
892 * FIXME: modify libata to give qc_prep a return value and
898 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
899 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
900 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
901 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
902 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
903 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
904 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
905 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
906 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
908 if (!(qc->flags & ATA_QCFLAG_DMAMAP)) {
915 * mv_qc_issue - Initiate a command to the host
916 * @qc: queued command to start
918 * This routine simply redirects to the general purpose routine
919 * if command is not DMA. Else, it sanity checks our local
920 * caches of the request producer/consumer indices then enables
921 * DMA and bumps the request producer index.
924 * Inherited from caller.
926 static int mv_qc_issue(struct ata_queued_cmd *qc)
928 void __iomem *port_mmio = mv_ap_base(qc->ap);
929 struct mv_port_priv *pp = qc->ap->private_data;
932 if (ATA_PROT_DMA != qc->tf.protocol) {
933 /* We're about to send a non-EDMA capable command to the
934 * port. Turn off EDMA so there won't be problems accessing
935 * shadow block, etc registers.
938 return ata_qc_issue_prot(qc);
941 in_ptr = readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
943 /* the req producer index should be the same as we remember it */
944 assert(((in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
946 /* until we do queuing, the queue should be empty at this point */
947 assert(((in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
948 ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS) >>
949 EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
951 mv_inc_q_index(&pp->req_producer); /* now incr producer index */
953 mv_start_dma(port_mmio, pp);
955 /* and write the request in pointer to kick the EDMA to life */
956 in_ptr &= EDMA_REQ_Q_BASE_LO_MASK;
957 in_ptr |= pp->req_producer << EDMA_REQ_Q_PTR_SHIFT;
958 writelfl(in_ptr, port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
964 * mv_get_crpb_status - get status from most recently completed cmd
965 * @ap: ATA channel to manipulate
967 * This routine is for use when the port is in DMA mode, when it
968 * will be using the CRPB (command response block) method of
969 * returning command completion information. We assert indices
970 * are good, grab status, and bump the response consumer index to
971 * prove that we're up to date.
974 * Inherited from caller.
976 static u8 mv_get_crpb_status(struct ata_port *ap)
978 void __iomem *port_mmio = mv_ap_base(ap);
979 struct mv_port_priv *pp = ap->private_data;
982 out_ptr = readl(port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
984 /* the response consumer index should be the same as we remember it */
985 assert(((out_ptr >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
988 /* increment our consumer index... */
989 pp->rsp_consumer = mv_inc_q_index(&pp->rsp_consumer);
991 /* and, until we do NCQ, there should only be 1 CRPB waiting */
992 assert(((readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) >>
993 EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
996 /* write out our inc'd consumer index so EDMA knows we're caught up */
997 out_ptr &= EDMA_RSP_Q_BASE_LO_MASK;
998 out_ptr |= pp->rsp_consumer << EDMA_RSP_Q_PTR_SHIFT;
999 writelfl(out_ptr, port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1001 /* Return ATA status register for completed CRPB */
1002 return (pp->crpb[pp->rsp_consumer].flags >> CRPB_FLAG_STATUS_SHIFT);
1006 * mv_err_intr - Handle error interrupts on the port
1007 * @ap: ATA channel to manipulate
1009 * In most cases, just clear the interrupt and move on. However,
1010 * some cases require an eDMA reset, which is done right before
1011 * the COMRESET in mv_phy_reset(). The SERR case requires a
1012 * clear of pending errors in the SATA SERROR register. Finally,
1013 * if the port disabled DMA, update our cached copy to match.
1016 * Inherited from caller.
1018 static void mv_err_intr(struct ata_port *ap)
1020 void __iomem *port_mmio = mv_ap_base(ap);
1021 u32 edma_err_cause, serr = 0;
1023 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1025 if (EDMA_ERR_SERR & edma_err_cause) {
1026 serr = scr_read(ap, SCR_ERROR);
1027 scr_write_flush(ap, SCR_ERROR, serr);
1029 if (EDMA_ERR_SELF_DIS & edma_err_cause) {
1030 struct mv_port_priv *pp = ap->private_data;
1031 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1033 DPRINTK(KERN_ERR "ata%u: port error; EDMA err cause: 0x%08x "
1034 "SERR: 0x%08x\n", ap->id, edma_err_cause, serr);
1036 /* Clear EDMA now that SERR cleanup done */
1037 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1039 /* check for fatal here and recover if needed */
1040 if (EDMA_ERR_FATAL & edma_err_cause) {
1046 * mv_host_intr - Handle all interrupts on the given host controller
1047 * @host_set: host specific structure
1048 * @relevant: port error bits relevant to this host controller
1049 * @hc: which host controller we're to look at
1051 * Read then write clear the HC interrupt status then walk each
1052 * port connected to the HC and see if it needs servicing. Port
1053 * success ints are reported in the HC interrupt status reg, the
1054 * port error ints are reported in the higher level main
1055 * interrupt status register and thus are passed in via the
1056 * 'relevant' argument.
1059 * Inherited from caller.
1061 static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
1064 void __iomem *mmio = host_set->mmio_base;
1065 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1066 struct ata_port *ap;
1067 struct ata_queued_cmd *qc;
1069 int shift, port, port0, hard_port, handled;
1070 unsigned int err_mask;
1076 port0 = MV_PORTS_PER_HC;
1079 /* we'll need the HC success int register in most cases */
1080 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
1082 writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
1085 VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
1086 hc,relevant,hc_irq_cause);
1088 for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
1089 ap = host_set->ports[port];
1090 hard_port = port & MV_PORT_MASK; /* range 0-3 */
1091 handled = 0; /* ensure ata_status is set if handled++ */
1093 if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
1094 /* new CRPB on the queue; just one at a time until NCQ
1096 ata_status = mv_get_crpb_status(ap);
1098 } else if ((DEV_IRQ << hard_port) & hc_irq_cause) {
1099 /* received ATA IRQ; read the status reg to clear INTRQ
1101 ata_status = readb((void __iomem *)
1102 ap->ioaddr.status_addr);
1106 err_mask = ac_err_mask(ata_status);
1108 shift = port << 1; /* (port * 2) */
1109 if (port >= MV_PORTS_PER_HC) {
1110 shift++; /* skip bit 8 in the HC Main IRQ reg */
1112 if ((PORT0_ERR << shift) & relevant) {
1114 err_mask |= AC_ERR_OTHER;
1118 if (handled && ap) {
1119 qc = ata_qc_from_tag(ap, ap->active_tag);
1121 VPRINTK("port %u IRQ found for qc, "
1122 "ata_status 0x%x\n", port,ata_status);
1123 /* mark qc status appropriately */
1124 ata_qc_complete(qc, err_mask);
1134 * @dev_instance: private data; in this case the host structure
1137 * Read the read only register to determine if any host
1138 * controllers have pending interrupts. If so, call lower level
1139 * routine to handle. Also check for PCI errors which are only
1143 * This routine holds the host_set lock while processing pending
1146 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
1147 struct pt_regs *regs)
1149 struct ata_host_set *host_set = dev_instance;
1150 unsigned int hc, handled = 0, n_hcs;
1151 void __iomem *mmio = host_set->mmio_base;
1154 irq_stat = readl(mmio + HC_MAIN_IRQ_CAUSE_OFS);
1156 /* check the cases where we either have nothing pending or have read
1157 * a bogus register value which can indicate HW removal or PCI fault
1159 if (!irq_stat || (0xffffffffU == irq_stat)) {
1163 n_hcs = mv_get_hc_count(host_set->ports[0]->flags);
1164 spin_lock(&host_set->lock);
1166 for (hc = 0; hc < n_hcs; hc++) {
1167 u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
1169 mv_host_intr(host_set, relevant, hc);
1173 if (PCI_ERR & irq_stat) {
1174 printk(KERN_ERR DRV_NAME ": PCI ERROR; PCI IRQ cause=0x%08x\n",
1175 readl(mmio + PCI_IRQ_CAUSE_OFS));
1177 DPRINTK("All regs @ PCI error\n");
1178 mv_dump_all_regs(mmio, -1, to_pci_dev(host_set->dev));
1180 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1183 spin_unlock(&host_set->lock);
1185 return IRQ_RETVAL(handled);
1189 * mv_phy_reset - Perform eDMA reset followed by COMRESET
1190 * @ap: ATA channel to manipulate
1192 * Part of this is taken from __sata_phy_reset and modified to
1193 * not sleep since this routine gets called from interrupt level.
1196 * Inherited from caller. This is coded to safe to call at
1197 * interrupt level, i.e. it does not sleep.
1199 static void mv_phy_reset(struct ata_port *ap)
1201 void __iomem *port_mmio = mv_ap_base(ap);
1202 struct ata_taskfile tf;
1203 struct ata_device *dev = &ap->device[0];
1204 unsigned long timeout;
1206 VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio);
1210 writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS);
1211 udelay(25); /* allow reset propagation */
1213 /* Spec never mentions clearing the bit. Marvell's driver does
1214 * clear the bit, however.
1216 writelfl(0, port_mmio + EDMA_CMD_OFS);
1218 VPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
1219 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1220 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1222 /* proceed to init communications via the scr_control reg */
1223 scr_write_flush(ap, SCR_CONTROL, 0x301);
1225 scr_write_flush(ap, SCR_CONTROL, 0x300);
1226 timeout = jiffies + (HZ * 1);
1229 if ((scr_read(ap, SCR_STATUS) & 0xf) != 1)
1231 } while (time_before(jiffies, timeout));
1233 VPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
1234 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1235 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1237 if (sata_dev_present(ap)) {
1240 printk(KERN_INFO "ata%u: no device found (phy stat %08x)\n",
1241 ap->id, scr_read(ap, SCR_STATUS));
1242 ata_port_disable(ap);
1245 ap->cbl = ATA_CBL_SATA;
1247 tf.lbah = readb((void __iomem *) ap->ioaddr.lbah_addr);
1248 tf.lbam = readb((void __iomem *) ap->ioaddr.lbam_addr);
1249 tf.lbal = readb((void __iomem *) ap->ioaddr.lbal_addr);
1250 tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
1252 dev->class = ata_dev_classify(&tf);
1253 if (!ata_dev_present(dev)) {
1254 VPRINTK("Port disabled post-sig: No device present.\n");
1255 ata_port_disable(ap);
1261 * mv_eng_timeout - Routine called by libata when SCSI times out I/O
1262 * @ap: ATA channel to manipulate
1264 * Intent is to clear all pending error conditions, reset the
1265 * chip/bus, fail the command, and move on.
1268 * This routine holds the host_set lock while failing the command.
1270 static void mv_eng_timeout(struct ata_port *ap)
1272 struct ata_queued_cmd *qc;
1273 unsigned long flags;
1275 printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
1276 DPRINTK("All regs @ start of eng_timeout\n");
1277 mv_dump_all_regs(ap->host_set->mmio_base, ap->port_no,
1278 to_pci_dev(ap->host_set->dev));
1280 qc = ata_qc_from_tag(ap, ap->active_tag);
1281 printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
1282 ap->host_set->mmio_base, ap, qc, qc->scsicmd,
1283 &qc->scsicmd->cmnd);
1289 printk(KERN_ERR "ata%u: BUG: timeout without command\n",
1292 /* hack alert! We cannot use the supplied completion
1293 * function from inside the ->eh_strategy_handler() thread.
1294 * libata is the only user of ->eh_strategy_handler() in
1295 * any kernel, so the default scsi_done() assumes it is
1296 * not being called from the SCSI EH.
1298 spin_lock_irqsave(&ap->host_set->lock, flags);
1299 qc->scsidone = scsi_finish_command;
1300 ata_qc_complete(qc, AC_ERR_OTHER);
1301 spin_unlock_irqrestore(&ap->host_set->lock, flags);
1306 * mv_port_init - Perform some early initialization on a single port.
1307 * @port: libata data structure storing shadow register addresses
1308 * @port_mmio: base address of the port
1310 * Initialize shadow register mmio addresses, clear outstanding
1311 * interrupts on the port, and unmask interrupts for the future
1312 * start of the port.
1315 * Inherited from caller.
1317 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
1319 unsigned long shd_base = (unsigned long) port_mmio + SHD_BLK_OFS;
1322 /* PIO related setup
1324 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
1326 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
1327 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
1328 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
1329 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
1330 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
1331 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
1333 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
1334 /* special case: control/altstatus doesn't have ATA_REG_ address */
1335 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
1338 port->cmd_addr = port->bmdma_addr = port->scr_addr = 0;
1340 /* Clear any currently outstanding port interrupt conditions */
1341 serr_ofs = mv_scr_offset(SCR_ERROR);
1342 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
1343 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1345 /* unmask all EDMA error interrupts */
1346 writelfl(~0, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
1348 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
1349 readl(port_mmio + EDMA_CFG_OFS),
1350 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
1351 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
1355 * mv_host_init - Perform some early initialization of the host.
1356 * @probe_ent: early data struct representing the host
1358 * If possible, do an early global reset of the host. Then do
1359 * our port init and clear/unmask all/relevant host interrupts.
1362 * Inherited from caller.
1364 static int mv_host_init(struct ata_probe_ent *probe_ent)
1366 int rc = 0, n_hc, port, hc;
1367 void __iomem *mmio = probe_ent->mmio_base;
1368 void __iomem *port_mmio;
1370 if ((MV_FLAG_GLBL_SFT_RST & probe_ent->host_flags) &&
1371 mv_global_soft_reset(probe_ent->mmio_base)) {
1376 n_hc = mv_get_hc_count(probe_ent->host_flags);
1377 probe_ent->n_ports = MV_PORTS_PER_HC * n_hc;
1379 for (port = 0; port < probe_ent->n_ports; port++) {
1380 port_mmio = mv_port_base(mmio, port);
1381 mv_port_init(&probe_ent->port[port], port_mmio);
1384 for (hc = 0; hc < n_hc; hc++) {
1385 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1387 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
1388 "(before clear)=0x%08x\n", hc,
1389 readl(hc_mmio + HC_CFG_OFS),
1390 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
1392 /* Clear any currently outstanding hc interrupt conditions */
1393 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
1396 /* Clear any currently outstanding host interrupt conditions */
1397 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1399 /* and unmask interrupt generation for host regs */
1400 writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
1401 writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
1403 VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
1404 "PCI int cause/mask=0x%08x/0x%08x\n",
1405 readl(mmio + HC_MAIN_IRQ_CAUSE_OFS),
1406 readl(mmio + HC_MAIN_IRQ_MASK_OFS),
1407 readl(mmio + PCI_IRQ_CAUSE_OFS),
1408 readl(mmio + PCI_IRQ_MASK_OFS));
1414 * mv_print_info - Dump key info to kernel log for perusal.
1415 * @probe_ent: early data struct representing the host
1417 * FIXME: complete this.
1420 * Inherited from caller.
1422 static void mv_print_info(struct ata_probe_ent *probe_ent)
1424 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1425 struct mv_host_priv *hpriv = probe_ent->private_data;
1429 /* Use this to determine the HW stepping of the chip so we know
1430 * what errata to workaround
1432 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1434 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
1437 else if (scc == 0x01)
1442 dev_printk(KERN_INFO, &pdev->dev,
1443 "%u slots %u ports %s mode IRQ via %s\n",
1444 (unsigned)MV_MAX_Q_DEPTH, probe_ent->n_ports,
1445 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
1449 * mv_init_one - handle a positive probe of a Marvell host
1450 * @pdev: PCI device found
1451 * @ent: PCI device ID entry for the matched host
1454 * Inherited from caller.
1456 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1458 static int printed_version = 0;
1459 struct ata_probe_ent *probe_ent = NULL;
1460 struct mv_host_priv *hpriv;
1461 unsigned int board_idx = (unsigned int)ent->driver_data;
1462 void __iomem *mmio_base;
1463 int pci_dev_busy = 0, rc;
1465 if (!printed_version++)
1466 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
1468 rc = pci_enable_device(pdev);
1473 rc = pci_request_regions(pdev, DRV_NAME);
1479 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1480 if (probe_ent == NULL) {
1482 goto err_out_regions;
1485 memset(probe_ent, 0, sizeof(*probe_ent));
1486 probe_ent->dev = pci_dev_to_dev(pdev);
1487 INIT_LIST_HEAD(&probe_ent->node);
1489 mmio_base = pci_iomap(pdev, MV_PRIMARY_BAR, 0);
1490 if (mmio_base == NULL) {
1492 goto err_out_free_ent;
1495 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1498 goto err_out_iounmap;
1500 memset(hpriv, 0, sizeof(*hpriv));
1502 probe_ent->sht = mv_port_info[board_idx].sht;
1503 probe_ent->host_flags = mv_port_info[board_idx].host_flags;
1504 probe_ent->pio_mask = mv_port_info[board_idx].pio_mask;
1505 probe_ent->udma_mask = mv_port_info[board_idx].udma_mask;
1506 probe_ent->port_ops = mv_port_info[board_idx].port_ops;
1508 probe_ent->irq = pdev->irq;
1509 probe_ent->irq_flags = SA_SHIRQ;
1510 probe_ent->mmio_base = mmio_base;
1511 probe_ent->private_data = hpriv;
1513 /* initialize adapter */
1514 rc = mv_host_init(probe_ent);
1519 /* Enable interrupts */
1520 if (pci_enable_msi(pdev) == 0) {
1521 hpriv->hp_flags |= MV_HP_FLAG_MSI;
1526 mv_dump_pci_cfg(pdev, 0x68);
1527 mv_print_info(probe_ent);
1529 if (ata_device_add(probe_ent) == 0) {
1530 rc = -ENODEV; /* No devices discovered */
1531 goto err_out_dev_add;
1538 if (MV_HP_FLAG_MSI & hpriv->hp_flags) {
1539 pci_disable_msi(pdev);
1546 pci_iounmap(pdev, mmio_base);
1550 pci_release_regions(pdev);
1552 if (!pci_dev_busy) {
1553 pci_disable_device(pdev);
1559 static int __init mv_init(void)
1561 return pci_module_init(&mv_pci_driver);
1564 static void __exit mv_exit(void)
1566 pci_unregister_driver(&mv_pci_driver);
1569 MODULE_AUTHOR("Brett Russ");
1570 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
1571 MODULE_LICENSE("GPL");
1572 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
1573 MODULE_VERSION(DRV_VERSION);
1575 module_init(mv_init);
1576 module_exit(mv_exit);